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ZORTMAN WELL 1-5991
Structure dossier · WDID 0109100 · 2 · SOUTH PLATTE RIVER · DWR record
Where this page's figures come from
Generated 2026-08-28 00:36 by Hydrohistorian. Sources: DWR HydroBase snapshot HydroBase_CO_20260707 (history) + CDSS REST (current), USGS NWIS cross-checks. Engine v0.5.0 (2deb1d7) — every figure regenerates from this named code version and data image.
Where it sits
Location as DWR records it. Faint dots are the neighbouring water; click any to open it.
Which of its rights are out of priority?
Not computable for this structure: this structure is not on the modelled flow network, so no reference gage can honestly stand in for it.
Where it sits in line
Priority 1884-04-07 — 68th most senior of the 7705 structures with decreed rights in this water districtDWR's administrative subdivision of a river basin; the unit calls are usually stated in..
Under prior appropriationColorado's rule for sharing water: first in time, first in right. Age decides, not proximity or need., everything ahead of it in this line is satisfied in full before it receives any water. Immediately ahead: WHITNEY WELL 2-R14652 (1884-04-07). Immediately behind: DEITRICH DITCH 3 (1885-04-02).
Decreed rights (4)
| Admin noDWR's numeric encoding of a water right's seniority. Smaller is more senior; the integer part counts days from 1849-12-31 to the date that ranks the right. | AppropriatedWhen water was first put to beneficial use. It sets seniority unless a prior adjudication date is later. | AdjudicatedWhen the water court confirmed the right. A use decreed in 1975 was not a decreed use in 1955, however old the appropriation is. | AbsoluteA right actually put to use, as opposed to conditional -- a placeholder for a use not yet made. | ConditionalA right reserving a place in line for a use not yet made; it must be diligently pursued or it lapses. | Units | UsesWhat the court said this water may be used for -- irrigation, municipal supply, augmentation and so on. | Case |
|---|---|---|---|---|---|---|---|
| 12516.0 | 1884-04-07 | 1895-11-21 | 0.0 | 0.0 | C | IRR | |
| 14185.0 | 1888-11-01 | 1895-11-21 | 0.0 | 0.0 | C | IRR | |
| 30521.0 | 1933-07-25 | 1972-12-31 | 1.96 | 0.0 | C | IRR | |
| 55969.0 | 2003-03-28 | 2003-12-31 | 0.0 | 3.5648 | C | AUG |
Legal record & documents
4 decreed actions on record across
2 court cases:
03CW0222, W3174.
Every case, dated
| Case | Actions | Latest adjudication | Types |
|---|---|---|---|
03CW0222 | 1 | 2003-12-31 | S |
W3174 | 3 | 1972-12-31 | O |
DWR's own records for this structure: net amounts · transactions & adjudication history · scanned decrees (search a case number there for the imaged document). On this site: the district's full legal picture →
Recorded use (last 8 years on record)
In a median year this structure has a recorded diversion of 12 AF. Its most recent year on record, 2024, came in at 5 AF — 42% of that, and 1st lowest of the 8 years with a recorded volume.
| Year | Diverted (AFA volume: one acre covered a foot deep, about 326,000 gallons -- roughly a suburban household's outdoor use for a year.) | Compared with its own record | Days recorded | Peak (cfs) |
|---|---|---|---|---|
| 2013 | 9 | 4th lowest of 8 · 75% of median | 5 | 1.9 |
| 2017 | 5 | 1st lowest of 8 · 42% of median | 4 | 1.6 |
| 2018 | 16 | 6th lowest of 8 · 133% of median | 14 | 1.6 |
| 2019 | 33 | 7th lowest of 8 · 275% of median | 16 | 1.7 |
| 2020 | 208 | 8th lowest of 8 · 1733% of median | 45 | 5.0 |
| 2021 | 15 | 5th lowest of 8 · 125% of median | 8 | 1.8 |
| 2022 | 8 | 3rd lowest of 8 · 67% of median | 6 | 1.4 |
| 2024 | 5 | 1st lowest of 8 · 42% of median | 4 | 1.2 |
Trends for this structure
Recorded use shows no clear trend over its last 8 recorded years — which is itself worth knowing.
How good is our record of it?
Grade B (7/10 points) — the components below are the finding; the letter alone is not.
The rubric, component by component
| Check | State | Detail |
|---|---|---|
| identity | complete | name, type, and water source all on file |
| decreed rights | on file | 4 right(s), seniority decoded |
| diversion record | fragment | 102 measured day(s) on file (under 180 -- a season, not a history) |
| record continuity | unknown | record too short to assess continuity (needs 2+ years of span and 180+ measured days) |
| published-record stability | stable | no upstream revisions recorded against this structure |
Advisory reading aid on public data — not an administrative or legal conclusion, not a title opinion, and not a substitute for DWR administration or an engineer's analysis. Methodology review status is disclosed at hydrohistorian's basin pages.